So I uploaded the screen capture of a person with the issue (in another state so I don't have access to their laptop). The sample is from the Manage boards page. I tested turning off Javascript. and got the following error along with the " Manage Baords" content below it. The piture above however does not show the Javascript is off error so I'm thinking it is something more sutle:

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This is a copy of the support ticket. It's an OnDemand Instance so not much else I can do. Surprised it is not more common. I expect it will be some setting common to the image of the laptops distributed to a portion of the my user community by their vendor. The image from the support ticket but all the nav elements are there just nothing below the primary nav common to all JIRA pages.

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That makes sense but per my problem statement the affected laptops are locked down so I can't perform the experiment you suggest but maybe I can survey the user based to get to a pattern of those who have and don't have the problem. Then I will play spot the difference in the browser settings.

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